MSD 8491 - Tach Drive Adapter

The standard tach drive for MSD Tach Drive Distributors is a 3/16' tang drive cable. In most cases this type of drive will work, but for those who require the 0.104' square drive (Corvette style), MSD offers a Tang to Square Drive Adapter to fit all MSD Tach Drive Distributor assemblies.

This adapter is included with each MSD Tach Drive Distributor.